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Home Product Big Head Carriage Bolt M8*120 | Heavy Duty Coach Bolt, Stainless Steel Large Head Fastener for Furniture Machinery Construction
Big head carriage bolt M8*120

Big Head Carriage Bolt M8*120 | Heavy Duty Coach Bolt, Stainless Steel Large Head Fastener for Furniture Machinery Construction

Big head M8x120 carriage bolt
M8x120 large head coach bolt
Heavy duty carriage bolt M8x120
Big head carriage bolt M8*120
Categories:Fasteners & Fixings
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Product Description

The Big head M8x120 carriage bolt, also known as M8x120 large head coach bolt or Heavy duty carriage bolt M8x120, is a specialized fastening component designed for robust industrial applications. Featuring an M8 thread diameter, 120mm length, and an oversized circular head with square neck anti-rotation design, it ensures secure mounting in high-vibration environments. The zinc-plated carbon steel construction provides corrosion resistance and supports working temperatures from -30°C to +120°C. Widely used in machinery assembly, structural frameworks, and heavy equipment manufacturing, this bolt offers exceptional shear strength up to 800MPa. Key advantages include simplified installation through the self-locking square neck and visual security from its prominent head. Limitations include requirement for pre-matched square-hole surfaces and restricted angular adjustability post-installation. Typical applications span construction, transportation vehicle fabrication, and industrial automation systems.
Parameter Specification
Product Designation Big head M8x120 carriage bolt
Alternative Names M8x120 large head coach bolt, Heavy duty carriage bolt M8x120
Thread Diameter M8 (8mm)
Shank Length 120mm ±1.5mm
Head Diameter 18mm ±0.5mm
Head Height 6mm ±0.3mm
Material Grade Carbon Steel Grade 4.8
Surface Finish Hot-dip galvanized (45-55μm)
Tensile Strength 420 MPa minimum
Thread Pitch 1.25mm (Standard ISO coarse thread)
Drive Type Square neck underhead (6.5mm x 6.5mm)
Compliance Standard DIN 603, ISO 7413
question:Can the company ensure stable supply?
answer:Yes, we maintain a reliable supply chain and sufficient inventory to ensure consistent product availability.
question:Why can't you supply discontinued models others have?
answer:We prioritize quality assurance for current models. Discontinued items may have limited stock or potential reliability risks.
question:What is the warranty policy?
answer:Warranty covers defects in materials or workmanship under normal use during the specified period, per product terms.
question:Can the company ensure stable product supply?
answer:Yes, we maintain long-term partnerships and strict inventory management.
question:Why is there a transaction fee?
answer:The fee covers payment processing and administrative costs for secure transactions.
question:Can the company ensure stable supply?
answer:Yes, we maintain a reliable supply chain and sufficient inventory to ensure consistent product availability.
question:Why can't you supply discontinued models others have?
answer:We prioritize quality assurance for current models. Discontinued items may have limited stock or potential reliability risks.
question:What is the warranty policy?
answer:Warranty covers defects in materials or workmanship under normal use during the specified period, per product terms.
question:Can the company ensure stable product supply?
answer:Yes, we maintain long-term partnerships and strict inventory management.
question:Why is there a transaction fee?
answer:The fee covers payment processing and administrative costs for secure transactions.
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